Drywall Contractor (C-12) Concrete-Precast Concrete, Cement, Quarry Products Supplier & Rentals Cesspool Contractor (C-9) Cement/Concrete & Accessories Supplies Cement Concrete Contractor (C-31a) Carpentry Framing Contractor (C-6) Cabinet, Millwork, & Carpentry Remodeling & Repairs Contractor (C-5) Building Moving & Wrecking Contractor (C-24) Asphalt Paving & Surfacing Contractor (C-3) Aluminum & other Metal Shingles Contractor (C-42a) Aggregates Irrigation & Lawn Sprinkler Contractor (C-37b) Institutional & Commercial Equipment Contractor (C-25) Injection Well Contractor (C-57b) Hollow Tile General Engineering & Specialty Contractors (AC) Excavating, Grading & Trenching Contractor (C-17) Solar Energy Systems Contractor (C-61) Sewer, Sewage Disposal, Drain, & Pipe Laying Contractor (C-43) Sewer & Drain Line Contractor (C-37a) Pumps Installation Contractor (C-57a) Precast Box Culverts/Concrete Products Post Tensioning Contractor (C-38) Pile Driving, Pile & Caisson Drilling & Foundation Contractor (C-35) Paving Ornamental, Guardrail, & Fencing Contractor (C-32) Wood Shingles & Shakes Contractor (C-42b) Welding Contractor (C-56) Swimming Pool Contractor (C-49) General Contractors

Drywall Contractor (C-12) Doors, Frames & Hardware Finishes Concrete Forming Cement Concrete Contractor (C-31a) Carpentry Framing Contractor (C-6) Cabinet, Millwork, & Carpentry Remodeling & Repairs Contractor (C-5) Building Moving & Wrecking Contractor (C-24) Aluminum & other Metal Shingles Contractor (C-42a) Institutional & Commercial Equipment Contractor (C-25) Hollow Tile Hollow Metal Doors General Contractor (B) Scaffolding Contractor (C-10) Roll-Up Doors Prefabricated Buildings (C-68mi) Playground Equipment Metal Buildings, Roofing & Siding Supplies Masonry Contractor (C-31) Wood Shingles & Shakes Contractor (C-42b) Wood & Vinyl Fencing Contractor (C-32a) Structural Steel Contractor (C-48) General Contractors